Sorry for what may be a few very simple questions, but my application is to create a device that will measure the temperature within a refrigerator and shutoff or turn on the 110 AC to keep the internal temperature between 55 deg F and 59 deg F. First question is if there is an interruption in the 110 AC from the power company, and the Arduino has to go thru a power up cycle, does the Arduino (Uno?) have to be reprogrammed, or maybe you call it reloading the sketch? Is there an Arduino package that uses an EPROM, or should I plan to purchase a Standalone AVR ISP Programmer Shield Kit to permanently hold my program/sketch?